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defon
3 years ago
7

Energy from food is measured in.. 1) Joules 2) Watts 3) Calories 4) Kilograms

Chemistry
1 answer:
rjkz [21]3 years ago
4 0
Energy from food is measured in calories. We convert the calories into chemical energy.

Therefore, the answer is the 3rd choice.
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For a reaction at equilibrium, which change can increase the rates of the forward and reverse reactions?a decrease in the concen
Monica [59]
Question requires a change resulting in an increase in both forward and reverse reactions. Now lets discuss options one by one and see there impact on rate of reactions.

1) <span>A decrease in the concentration of the reactants:
                                                                                       
When concentration of reactant is decreased it will shift the equilibrium in Backward direction, so resulting in increasing the backward reaction and decreasing the forward direction. Hence, this option is incorrect.

2) </span><span>A decrease in the surface area of the products:
                                                                               Greater the surface Area greater is the chances of collision and greater will be the rate of reaction. As the surface area of products is decreased it will not favor the backward reaction. Hence again this statement is incorrect according to given statement.

3) </span><span>An increase in the temperature of the system:
                                                                             An increase in temperature will shift the reaction in endothermic side. Hence, if the reaction is endothermic, an increase in temperature will increase the rate of forward direction or if the reaction is exothermic it will increase the rate of reverse direction. Hence, this option is correct according to given statement.

4) </span><span>An increase in the activation energy of the forward reaction:
                                                                                                   An increase in Activation energy will decrease the rate of reaction, either it is forward or reverse. So this is incorrect.

Result:
          Hence, the correct answer is,"</span>An increase in the temperature of the system".
7 0
3 years ago
_________feedback is a type of feedback in which a system is triggered to produce an output.
stiv31 [10]

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positive

Explanation:

3 0
3 years ago
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How many moles and atoms are there in 60 grams of Calcium?
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Answer:

The moles present in 60 g of calcium are 1.5 moles.

6 0
3 years ago
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Son buenos conductores del calor pero no de electricidad, frágiles y
-BARSIC- [3]

Answer:

la respuesta es Metales

Explanation:

Buenos conductores del calor y la electricidad ... Los metales alcalino-térreos siempre pierden dos electrones y presentan iones con carga 

4 0
3 years ago
The most common physical state of the elements is
Ratling [72]

Answer:

Solids.

Explanation: Most elements are solids, only 11 are gases and 2 are liquids.

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